I have four datastores in vCenter, each with 20TB, giving me a total of 80TB. I'd like to reallocate the storage to something like 50TB for one datastore and 10TB each for the other three. Is this possible to do in vCenter, considering there are various VMs already running on each datastore?
2 Answers
To achieve what you want, you'd probably have to create four new volumes on your storage system first, then set up four new datastores in vCenter. After that, you'll need to use storage vMotion to migrate your VMs over. You could expand one datastore to 50TB and then move data from the other three into new 10TB datastores.
Datastores are basically partitions on a storage LUN. So the big question is whether your storage system allows resizing like that. Typically, it’s not straightforward; you’d likely need to move VMs around manually and create new volumes. It really depends on your storage setup.
So, would that mean I need to add 80TB of new storage? Like, would I have to buy more?